Eagle Cutting Tool HT-4375-14-B-D 7/16-14 Hss Bottom Tap

Product Description

The EAGLE CUTTING TOOL HT-4375-14-B-D is a 7/16-14 high-speed steel (HSS) hand bottom tap manufactured in the USA. Bottom taps are ground with minimal chamfer on the leading threads, allowing the tap to cut full threads close to the bottom of a blind hole. This tool is designed for hand tapping operations where a complete thread depth is required in stopped bores. Machinists, pipefitters, maintenance technicians, and fabricators rely on bottom taps as the final step in a three-tap sequence to fully thread a hole. The HSS construction provides sufficient hardness and wear resistance for threading steel, cast iron, aluminum, and similar materials.

This tap is suited for general industrial and maintenance applications requiring 7/16-14 UNC threads. It performs in both production and repair scenarios, including tapping holes in structural steel, machinery components, and fabricated assemblies. The bottom tap configuration is most commonly used after a taper tap and a plug tap have established the thread, completing the cut to the full depth of a blind hole. It is appropriate for use in shop environments as well as field repair situations.

Key Features

• 7/16-14 UNC thread form for standard unified coarse thread applications
• Bottom tap style allows threading to the full depth of blind holes
• High-speed steel construction for durability across a range of base metals
• USA manufactured for consistent dimensional accuracy and quality control
• Designed for hand tapping use with a standard tap wrench or T-handle

Compatibility

Designed as a standard hand bottom tap for use in any application requiring 7/16-14 UNC threads, compatible with standard tap wrenches and T-handle drivers sized for this shank diameter.

Installation Notes

Secure the workpiece firmly before beginning. Use cutting fluid appropriate for the base material to reduce friction and extend tap life. Apply steady, even pressure and back off the tap periodically to break chips and clear the flutes. If the tap binds, stop and reverse to clear chips before continuing to avoid breakage.

Technical Specifications

• Thread Size: 7/16-14 UNC
• Tap Type: Hand Bottom Tap
• Material: High-Speed Steel (HSS)
• Country of Origin: USA
• Weight: 0.32 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-4375-14-B-D